Makita Battery 18v 4.0ah Lithium-ion
Makita Battery 18v 4.0ah Lithium-ion (947537)

£49.99 ex VAT

(£59.99 inc VAT)

Makita BL1840 Makita Battery 18v 4.0ah Lithium-ion
ITS Order Reference: 947537

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Makita BL1840 Makita Battery 18v 4.0ah Lithium-ion
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ITS Expert Says

A Gateway to cordless power tool heaven! Makita 18v batteries are the lifeblood of the largest cordless power tool family (LXT range) in the world powering over 200 cordless tools.

Now with in-built battery state indicators you know exactly how much power you have left before, during and after use,

Remember - with batteries the higher the Ah the longer the runtime... not more power! A 3.0Ah could last 30mins doing a task - a 5.0Ah could last 50 mins doing the same task - they both produce the same amount of power it's just that the 5.0Ah will last longer!

Product Description

The Makita LXT BL1840 18 Volt 4.0Ah Lithium-Ion (Li-ion) batteries use Makita's optimum charging system which produces 30% more runtime, and 2x more cycles over the lifetime of the BL1840 batteries.

A 5x lower self-discharge keeps the Makita BL1840 battery cells active and ready for use even after long periods of storage, charging at any time will have no effect on the battery.

Built-in shock absorbing features protect the battery and sixteen firm holding contact terminals reduce the risk of power loss/fluctuation in high vibration work environments.

The Makita BL1840 battery's built-in memory chip communicates with the charger to maximize battery life using 3 Active Controls (Current, Voltage & Thermal)

The Makita LXT BL1840 18 Volt 3.0Ah Lithium-ion (Li-ion) battery uses the latest Lithium-ion battery technology. With no memory affect Lithium-ion (Li-ion) batteries can be "topped up" at any time with no affect to battery life. The main benefit to this battery type is the weight - up to 40% lighter than Ni-CD makes these the favourites for power tools.

Model numbers that are currently NOT compatible are:






Current model 



18v 136mm Circular Saw 


18v Metal Cutting Circular Saw 


18v Portable Band Saw 


18v Jigsaw 


18v Angle Grinder 


18v Die Grinder 


18v Die Grinder 


18v Nibbler 


18v Straight Shear 


18v Biscuit Jointer 














  • Product Weight1.0kg
  • Product MaterialPlastic
  • Pack SizePack of 1
  • Voltage18V
  • Battery TypeLithium-ion
  • Battery Capacity4.0Ah
  • Battery CompatibilityMakita 18v Li-ion
  • Battery Level IndicatorNo

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We sell a range of nails compatible with this product



This product comes with a standard one year manufacturers warranty. If you require more information on what the warranty covers or how to make a claim on your warranty, please call our team on: 0208 532 5000 or send an email to: so we can help you!


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Spend £100 (inc VAT) for Free Delivery
Select Your Own Delivery Date
1 Hour Delivery Slot
0% PayPal finance available when your entire order is £99+ (inc VAT)

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